Answer:
MAX3221EEAE+, 16-pin SSOP, Package Code A16+2
thermal information:
Single-layer board:
Theta jA = 140°C/W
Theta jB = Maxim does not provide this for most parts.
Theta jC = 34°C/W
Multi-layer board:
Theta jA = 86°C/W
Theta jB = Maxim does not provide this for most parts
Theta jC = 33°C/W
Max Junction temp - 160°C.